我有以下简单程序:
import std.stdio;
int main(string[] argv) {
writeln("Hello, world!");
return 0;
}
我正在构建如下:
DMD -c -m64 -od/proj/out -w -wi -fPIC -debug \
-g -I/proj/hello -unittest /proj/hello.d
LD -L/usr/share/dmd/lib/ -arch x86_64 -execute -macosx_version_min 10.7 \
-pie -lm -lpthread -lphobos2 -o /proj/out/hello_app /proj/out/hello.o
编译完美传递,但链接卡片与以下内容:
Undefined symbols for architecture x86_64:
"start", referenced from:
-u command line option
(maybe you meant: _D3std9algorithm41__T10startsWithVAyaa6_61203d3d2062TAhTAhZ10startsWithFAhAhZb, _D4core6thread6Thread5startMFZv , _D3std9algorithm91__T10startsWithVAyaa11_62203c20612e74696d6554TAS3std8datetime13PosixTimeZone10TransitionTlZ10startsWithFAS3std8datetime13PosixTimeZone10TransitionlZb , _D3std9algorithm43__T10startsWithVAyaa6_61203d3d2062TAyaTAyaZ10startsWithFAyaAyaZb , _D3std9algorithm41__T10startsWithVAyaa6_61203d3d2062TAxaTaZ10startsWithFAxaaZb , _D3std9algorithm92__T10startsWithVAyaa11_62203c20612e74696d6554TAS3std8datetime13PosixTimeZone10LeapSecondTylZ10startsWithFAS3std8datetime13PosixTimeZone10LeapSecondylZb , _D3std9algorithm92__T10startsWithVAyaa11_62203c20612e74696d6554TAS3std8datetime13PosixTimeZone10TransitionTylZ10startsWithFAS3std8datetime13PosixTimeZone10TransitionylZb )
ld: symbol(s) not found for architecture x86_64
我想我忘记了一些额外的静态库来链接,让它设置一切,但究竟是什么?
此外,我已经看到有关如何在dlang网站上进行单独编译和链接的说明,但无法找到它。
UPD1 :使用gcc -L/usr/share/dmd/lib/ -lphobos2 -lm -lpthread hello.o
在GCC的帮助下进行链接时,它有效,但我需要使用ld
。
答案 0 :(得分:6)
链接时添加-lcrt1.o
。
LD -L/usr/share/dmd/lib/ -arch x86_64 -execute -macosx_version_min 10.7 \
-pie -lm -lpthread -lphobos2 -lcrt1.o -o /proj/out/hello_app /proj/out/hello.o
[更新] 啊,你明白了:)
答案 1 :(得分:1)
由于纯粹的运气而找到了它!
应该与-lphobos2 -lm -lpthread
和 -lcrt1.o
相关联 - 然后一切都链接并正常工作。